64764441 has 40 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 34826112.

The previous prime is 64764439. The next prime is 64764451. The reversal of 64764441 is 14446746.

64764441 is a `hidden beast` number, since 6 + 4 + 7 + 644 + 4 + 1 = 666.

It is not a de Polignac number, because 64764441 - 2¹ = 64764439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64764396 and 64764405.

It is not an unprimeable number, because it can be changed into a prime (64764451) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6280 + ... + 12998.

It is an arithmetic number, because the mean of its divisors is an integer number (2927232).

Almost surely, 2^64764441 is an apocalyptic number.

It is an amenable number.

64764441 is a deficient number, since it is larger than the sum of its proper divisors (52324839).

64764441 is a wasteful number, since it uses less digits than its factorization.

64764441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755 (or 6746 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64764441 is about 8047.6357397685. The cubic root of 64764441 is about 401.5862863400.

The spelling of 64764441 in words is "sixty-four million, seven hundred sixty-four thousand, four hundred forty-one".